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问题 名词性从句用法疑问

Tooth brushing was common by the 1930s, after which toothpaste sales leveled off even thought the advertising, of course, continued. 句子里after后面的句子是名词性从句吗？如果翻译成"在哪个牙膏销量趋于稳定后…"的话，把which改成some可以吗？

问题 为什么containing要+ing

In the centre of the hall were tall structures containing coloured lights which went on and off.为什么containing要+ing

问题 现在分词的用法

请问下面句子里，featuring部分是现在分词做伴随状语吗？It goes farther afield than any of the other MCU films, featuring not only space travel (which has become pedestrian by now) but venturing into the fourth and fifth dimensions (time & multiple universes).

问题 that which的用法

I took a seat at the end of the hearthstone opposite that towards which my landlord advanced.（呼啸山庄:https://m.ximalaya.com/waiyu/20693653/154509071）请问这句话符合现代语法吗？Which指的是什么？

问题 分析 secure 词性和句中成分

I went to sleep secure in the knowledge that I was not alone in the house.

问题 as calmly什么成分

He felt sweat on his forehead，but he took the violin from the wall as calmly as if he were a welcome visitor. as calmly修饰谁？ as if是连接词吗？

问题 句子理解与分析

If people were to precede the comprehensive notion of environmental problem, species would not face the situation of becoming extinct any more.请问前半句如何理解翻译？前半句理解为"要是人们在这个概念之前"？之前做什么呢？感觉这句话不完整，是省...

问题 either问题

A--“ I didn't like the movie.”B--“I also didn't like the movie.”如果在对话中，前面一句否定，后面对方回答时可以用also吗？如上句对话，正确吗？我们常学习的 都是：否定句，否定句  接either. 肯定句，否定句 接also/too/as...

问题 比较句中如何还原

Cleaner air during its own covid-19 lockdown may have saved 17 times more lives than they may have save the (official) number lost to the virus.请问这句比较句中如何还原？

问题 不及物动词happen用法

A deadly traffic accident happened on the street.请问老师，既然happen是不及物动词，那么后面的介词on是与happen一起在句中组成一个词组吗？但我又觉得on 应该和the street一起做介词短语。搞不懂了

问题 句子成分分析

Skiing is just one of the activities that Simonsen,Arc's chief executive,and Bjarke Ingels,its lead architect,hope will enhance the latest jewel in Copenhagen's sustainability crown.1.前面的that引导的是什么从句呢2.这里的两个谓语动词怎么分析

问题 given还是giving

Ant has helped establish China as the world leader in digital transactions, given entrepreneurs and consumers far greater access to loans, and changed the way that people manage their money.这里用given用错了吧，现在分词才对吧。

问题 Since的用法

He liked a wild life and Peru was much more like the country of giants where Tom had found him, than any place the big man had since visited.麻烦老师们帮我分析下since在这里的用法。这里的since可以理解为ever吗？

问题 状语的问题

We caught the lion alive.He spent the entire journey asleep.这里alive个asleep可以分析为形容词作状语，但似乎也可以分析为普通的方式状语，请问哪种分析合理？我总觉得好像哪里不一样但又说不上来，所以请问这两种分析有区别吗？或者说...

问题 of+名词结构

As the world's population continues to grow, the supply of food becomes more and more of a concern. 老师，您好，请问 of+名词=adj.的这种结构中，名词前面不是通常是零冠词吗？如 of importance = important，可是为什么上面这个句子中是 of a concern 啊？